Data storage method of cloud storage system

Abstract

The invention discloses a data storage method of a cloud storage system, which comprises the steps of: carrying out coding fragmentation on a file on the basis of a buffer zone erasure code technology to obtain data fragments and check fragments; processing the data fragments and the check fragments to obtain a check identification; storing the check identification in an index server; requesting storage resource information to the index server according to the quantity of the data fragments and the check fragments; sending the data fragments and the check fragments to a plurality of storage nodes according to the storage resource information; judging whether needing to carry out integrity check on the data fragments and the check fragments in the storage nodes; if needing to carry out integrity check on the data fragments and the check fragments in the storage nodes, sending the data integrity check information to the storage nodes, receiving an identification information set returned by the storage nodes, and judging whether data storage errors or data losses exist according to the identification information set, if yes, coding for recovering the data, and sending the recovered data to the corresponding storage nodes.

Description

technical field [0001] The invention belongs to the field of computer network and computer storage, and in particular relates to a data storage method of a cloud storage system. Background technique [0002] For network storage systems, there will be much more temporary or permanent failure nodes than traditional systems. Therefore, a network storage system must use a certain strategy to shield these nodes from failure, so as to ensure the safe storage of data. Nowadays, the data storage method of cloud storage system is widely adopted. This method can realize safe and effective storage of data through data redundancy, direct data distribution, periodic error checking, and redundant data maintenance. [0003] However, the existing data storage methods have the following problems: it is difficult to ensure high availability of data in the case of low storage space and bandwidth overhead, it is difficult to provide efficient integrity checks and ensure data privacy, and it la...

AI Technical Summary

Problems solved by technology

[0003] However, the existing data storage methods have the following problems: it is difficult to ensure high availability of data in the case of low storage space and bandwidth overhead, it is difficult to provide efficient integrity checks and ensure data privacy, and it lacks certain fault tolerance and Disaster recovery capability

Images